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Finding the Fourth Proportional to 249.61, 344.44 and 144.69

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Solution

The fourth proportional to 249.61, 344.44 and 144.69 is: 199.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.61 : 344.44 = 144.69 : x
  2. Step 2: Convert to fraction form
    249.61/344.44 = 144.69/x
  3. Step 3: Cross multiply
    249.61x = 344.44 × 144.69
  4. Step 4: Simplify right side
    249.61x = 49,837.02
  5. Step 5: Solve for x
    x = 49,837.02/249.61
  6. Step 6: Final answer
    x = 199.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.